Local APIC

- local APIC timer used as the source of time

- PIC is still used as the hw interrupt controller as we don't have
  enough info without ACPI or MPS to set up IO APICs

- remapping of APIC when switching paging on, uses the new mechanism
  to tell VM what phys areas to map in kernel's virtual space

- one more step to SMP

based on code by Arun C.

kernel/kernel.h

@@ -1,6 +1,11 @@
 #ifndef KERNEL_H
 #define KERNEL_H
 
+/* APIC is turned on by default */
+#define CONFIG_APIC
+/* boot verbose */
+#define CONFIG_BOOT_VERBOSE
+
 /* This is the master header for the kernel.  It includes some other files
  * and defines the principal constants.
  */